I almost felt lightheaded. Was she actually serious about watching porn with me and playing in the same room? I sat there stunned for several seconds trying to collect my thoughts.
“If you’re serious about wanting to watch, I guess I’d be game.”
“My laptop is school issued, so I’m restricted by the sites I can visit online. Tina had a personal laptop I would use at school when I wanted to watch porn and get off. So yah, I’m serious, as long as you’re ok with it too.”
“Sure, after I finish lunch, I’ll go up and grab it…and a blanket,” I said with a grin.
30 minutes later I had hooked up the computer in the family room. Shelly came down, dressed again in just the long t-shirt she would wear in the mornings and was also carrying a blanket and a rabbit style vibrator, and sat down on the sofa. I had on a pair of shorts and also had my own blanket, which I had thrown onto the oversized chair. I was rather nervous about all this, but kind of excited at the same time. Since Shelly seemed to have been turned on by the threesome scene she had heard, I had picked out a video with several back-to-back threesome scenes. I hit the play button and sat down in my chair, covering up with the blanket.
The first scene started with a blonde and brunette who began kissing and playing together. I was curious how Shelly would respond to the lesbian scene and kept glancing over at her. She was intently watching the video, while sitting very still. I was getting really turned on by the scene and began discretely rubbing my cock under the blanket.
After a few minutes, a sports stud kind of guy entered the scene and very quickly, the girls had him naked and were taking turns sucking his large cock. I could see Shelly shifting around on the couch and noticed her glancing over at me as I was moving around a little as I pushed my shorts down to free my now very hard cock. A few seconds later I heard the hum of her vibrator and while I did my best not to look over at her, I couldn’t help taking short glances.
Shelley’s body began to move under the blanket and she would periodically pitch her head back slightly. My own body was visibly moving under my blanket as I jacked off, watching the guy onscreen pounding the blonde while she licked the brunette’s smooth pussy. We both tried to be discrete, but as the minutes past, it became clear we were both getting more and more aroused. Shelly began to moan a little as she turned up the intensity of the vibe and I let my legs stretch out in front of the chair, the blanket now tented over my hand as it stroked my rock-hard cock.
Ever few seconds, I would catch Shelly looking over at me, clearly seeing the outline of me stroking my cock. This turned me on even more and I gave up any pretense of trying to hide what I was doing, actually beginning to show off a little for her. She had similarly given up trying to hide what she was doing and I could clearly see her playing with one of her breasts while she worked the vibe between her legs. Suddenly, she stopped what she was doing and put her head under the blanket. I couldn’t tell what she was doing until her head re-emerged and she threw her t-shirt onto the floor. Fuck, my sister was now naked under the blanket. I almost said something, but didn’t want to change the mood.
Shelly went back to playing under the blanket as a new scene started. The top of the blanket was resting on her upper chest, but as she played, the blanket began to inch its way down each time I looked over at her. My own blanket was down near my waist and she could clearly see the motion of my hand as it worked up and down my shaft. She was really getting into playing with herself and the next time I looked over, the blanket was barely covering her nipples, exposing her full cleavage and then, as she shifted the position of the vibrator again, the blanket slipped over her nipples and down onto her stomach, fully exposing her breasts.
I just stared. They were full and perfectly round and her nipples were hard and pointed. Shelly looked over at me and make no attempt to cover herself, seeing me looking squarely at her. She closed her eyes and leaned her head back, her left hand playing with the nipple of her right breast. She turned her head towards me and opened her eyes, noticing she was exposing her breasts.
“Shit, I’m sorry,” she said.
“It’s ok, I don’t mind.”
“You sure?”
“Yah, it’s not like we don’t know what we’re both doing.”
“Ok,” Shelly said with a breathy voice. About a minute later she looked over at me, clearly highly aroused.
“Let me see,” she said in a low husky voice.
I didn’t need to be asked twice and pushed my blanket off my body, exposing my fully erect cock to her as I continued to masturbate. The sound of the vibrator suddenly became muffled and I knew she had just pushed it deep into her pussy. She continued watching me for several seconds, then finally turned back to the tv. I did the same, but found myself splitting my attention between the screen and Shelly.
A minute or so later, she shifted positions again, while at the same time pushing her blanket to the floor. She was sitting lengthwise on the sofa with her right leg stretched out and her left leg bent, her foot planted on the floor. Her right hand was holding the vibrator deep inside her, allowing the rabbit ears to press against her clit. She was totally shaved also and her lips were full and pouty, wrapping around the shaft of the vibrator. She continued to watch the scene of the tv, but was clearly putting on a show for me and being very turned on by it.
Both of us were close and her moans got louder as my hand worked my cock hard and faster. I was now openly watching her and she finally turned her head back to me, staring at my cock as we both neared our climax. I let out a loud groan as my cock exploded, sending streams of hot cum in an arch that fell over my chest and stomach. Shelly began to whimper as she ground the rabbit ears into her swollen clit, twisting the vide deep inside her, as her body shook through the throws of her own orgasm. After several seconds, our orgasms finally subsided and we sat there, watching the TV.
I finally got up and walked into the half bath off the family room to clean up. When I came back, Shelly was gone, undoubtedly having headed to her room to do the same. I pulled my shorts back on and turned off the video, folded the blankets, and sat back down in the chair, shocked by what we had both just done, but incredibly turned on by it. Shelly was my sister, but we hadn’t done anything other than watch each other. The image of seeing her perfect body, totally exposed while she openly masturbated in front of me continued to play in my head and I kept hearing her say “let me see.”
I finally let the image go and turned the TV back on and watched a recap of the first round of the NFL draft. About half an hour later, Shelly came downstairs and back into the family room, fully dressed again in short cutoffs and a t-shirt. Neither of us said anything for a couple of minutes, then I finally broke the silence.